DE1458830A1 - Verfahren und Vorrichtung zum Frischen von Roheisen - Google Patents
Verfahren und Vorrichtung zum Frischen von RoheisenInfo
- Publication number
- DE1458830A1 DE1458830A1 DE19651458830 DE1458830A DE1458830A1 DE 1458830 A1 DE1458830 A1 DE 1458830A1 DE 19651458830 DE19651458830 DE 19651458830 DE 1458830 A DE1458830 A DE 1458830A DE 1458830 A1 DE1458830 A1 DE 1458830A1
- Authority
- DE
- Germany
- Prior art keywords
- slag
- vessel
- fresh
- metal
- fresh vessel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 160
- 229910000805 Pig iron Inorganic materials 0.000 title claims description 44
- 238000007670 refining Methods 0.000 title claims description 23
- 239000002893 slag Substances 0.000 claims description 264
- 229910052751 metal Inorganic materials 0.000 claims description 80
- 239000002184 metal Substances 0.000 claims description 79
- 230000008569 process Effects 0.000 claims description 60
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 47
- 239000000126 substance Substances 0.000 claims description 30
- 238000007664 blowing Methods 0.000 claims description 26
- 239000007789 gas Substances 0.000 claims description 25
- 238000005187 foaming Methods 0.000 claims description 22
- 229910052742 iron Inorganic materials 0.000 claims description 22
- 238000000746 purification Methods 0.000 claims description 16
- 229910052698 phosphorus Inorganic materials 0.000 claims description 15
- 239000011574 phosphorus Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- 230000001590 oxidative effect Effects 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000002923 metal particle Substances 0.000 claims description 9
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000003337 fertilizer Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- -1 phosphorus anhydride Chemical class 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 239000004922 lacquer Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 244000007645 Citrus mitis Species 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims 2
- 235000012239 silicon dioxide Nutrition 0.000 claims 2
- 229910001018 Cast iron Inorganic materials 0.000 claims 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- 239000003818 cinder Substances 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 230000002459 sustained effect Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 23
- 229910000831 Steel Inorganic materials 0.000 description 22
- 239000000203 mixture Substances 0.000 description 22
- 239000010959 steel Substances 0.000 description 22
- 238000011161 development Methods 0.000 description 21
- 230000018109 developmental process Effects 0.000 description 21
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 9
- 235000011941 Tilia x europaea Nutrition 0.000 description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 9
- 239000004571 lime Substances 0.000 description 9
- 238000005469 granulation Methods 0.000 description 8
- 230000003179 granulation Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000001784 detoxification Methods 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 235000013980 iron oxide Nutrition 0.000 description 5
- 230000000750 progressive effect Effects 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 238000007792 addition Methods 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 239000013528 metallic particle Substances 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 235000014443 Pyrus communis Nutrition 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052595 hematite Inorganic materials 0.000 description 3
- 239000011019 hematite Substances 0.000 description 3
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 101100366710 Arabidopsis thaliana SSL12 gene Proteins 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 101100366563 Panax ginseng SS13 gene Proteins 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 241001284373 Spinus Species 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- BWKOZPVPARTQIV-UHFFFAOYSA-N azanium;hydron;2-hydroxypropane-1,2,3-tricarboxylate Chemical compound [NH4+].OC(=O)CC(O)(C(O)=O)CC([O-])=O BWKOZPVPARTQIV-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000000744 eyelid Anatomy 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/36—Processes yielding slags of special composition
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/32—Blowing from above
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/56—Manufacture of steel by other methods
- C21C5/567—Manufacture of steel by other methods operating in a continuous way
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/36—Driving arrangements for rotating the receptacle at more than one speed
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/36—Processes yielding slags of special composition
- C21C2005/366—Foam slags
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Textile Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Applications Claiming Priority (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU46019 | 1964-05-04 | ||
| LU46119 | 1964-05-21 | ||
| LU46145 | 1964-05-23 | ||
| LU46202 | 1964-05-30 | ||
| LU46229 | 1964-06-02 | ||
| LU46249 | 1964-06-04 | ||
| LU46473 | 1964-07-07 | ||
| LU47155A LU47155A1 (enrdf_load_stackoverflow) | 1964-10-17 | 1964-10-17 | |
| LU47156A LU47156A1 (enrdf_load_stackoverflow) | 1964-10-17 | 1964-10-17 | |
| LU47219 | 1964-10-27 | ||
| LU47265 | 1964-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1458830A1 true DE1458830A1 (de) | 1969-03-27 |
Family
ID=27582350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19651458830 Pending DE1458830A1 (de) | 1964-05-04 | 1965-04-28 | Verfahren und Vorrichtung zum Frischen von Roheisen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3356490A (enrdf_load_stackoverflow) |
| JP (1) | JPS537370B1 (enrdf_load_stackoverflow) |
| BE (1) | BE662026A (enrdf_load_stackoverflow) |
| DE (1) | DE1458830A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1097811A (enrdf_load_stackoverflow) |
| LU (9) | LU46019A1 (enrdf_load_stackoverflow) |
| NL (1) | NL6505692A (enrdf_load_stackoverflow) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1427201A (fr) * | 1964-12-24 | 1966-02-04 | Siderurgie Fse Inst Rech | Fabrication d'acier à partir de produits préréduits |
| FR91011E (fr) * | 1966-09-28 | 1968-03-29 | Siderurgie Fse Inst Rech | Fabrication d'acier à partir de produits préréduits |
| NL6802316A (enrdf_load_stackoverflow) * | 1967-03-13 | 1968-09-16 | ||
| LU55578A1 (enrdf_load_stackoverflow) * | 1967-03-18 | 1968-05-06 | ||
| US4052043A (en) * | 1968-05-18 | 1977-10-04 | Stahlwerke Peine-Salzgitter Ag | Apparatus for continuously refining molten metals |
| US3802682A (en) * | 1969-08-19 | 1974-04-09 | Voest Ag | Method for continuously refining pig iron and plant for carrying out such method |
| US3971549A (en) * | 1975-03-05 | 1976-07-27 | Habig Alan L | Process and apparatus for treating and transferring metal in the liquid state |
| JPS5514802A (en) * | 1978-06-30 | 1980-02-01 | Nippon Kokan Kk <Nkk> | Treating method for molten metal generated at reduction treatment for slag from steel manufacture |
| US4457777A (en) * | 1981-09-07 | 1984-07-03 | British Steel Corporation | Steelmaking |
| US5584909A (en) * | 1995-01-19 | 1996-12-17 | Ltv Steel Company, Inc. | Controlled foamy slag process |
| AT405526B (de) * | 1995-03-30 | 1999-09-27 | Voest Alpine Stahl Donawitz | Verfahren und vorrichtung zur begrenzung des schaumschlackenvolumens in einem metallurgischen gefäss |
| US5885323A (en) * | 1997-04-25 | 1999-03-23 | Ltv Steel Company, Inc. | Foamy slag process using multi-circuit lance |
| CN103333981B (zh) * | 2013-06-09 | 2014-09-17 | 武汉钢铁(集团)公司 | 一种利用石灰石作为造渣料冶炼高硅铁水的方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US724770A (en) * | 1902-05-31 | 1903-04-07 | Frank E Young | Art of making steel. |
| US1032653A (en) * | 1904-11-11 | 1912-07-16 | Herman A Brassert | Method of manufacturing steel. |
| US1032655A (en) * | 1904-11-28 | 1912-07-16 | Herman A Brassert | Method of manufacturing steel. |
| FR361887A (fr) * | 1905-11-04 | 1906-12-10 | Antoine Henri Imbert | Procédé de métallurgie du nickel |
| US2800631A (en) * | 1955-11-16 | 1957-07-23 | Voest Ag | Method of carrying out melting processes |
| US2962277A (en) * | 1958-05-15 | 1960-11-29 | Gen Electric | Apparatus for continuous process of steel making |
| US3215424A (en) * | 1960-12-07 | 1965-11-02 | Kanamori Kuro | Apparatus for refining iron |
| US3145255A (en) * | 1962-04-26 | 1964-08-18 | Bausch & Lomb | Projection objective for photo mechanisms |
| US3275432A (en) * | 1965-02-23 | 1966-09-27 | Alexandrovsky George | Oxygen steel making |
-
1964
- 1964-05-04 LU LU46019D patent/LU46019A1/xx unknown
- 1964-05-21 LU LU46119D patent/LU46119A1/xx unknown
- 1964-05-23 LU LU46145D patent/LU46145A1/xx unknown
- 1964-05-30 LU LU46202D patent/LU46202A1/xx unknown
- 1964-06-02 LU LU46229D patent/LU46229A1/xx unknown
- 1964-06-04 LU LU46249D patent/LU46249A1/xx unknown
- 1964-07-07 LU LU46473D patent/LU46473A1/xx unknown
- 1964-10-27 LU LU47219D patent/LU47219A1/xx unknown
- 1964-10-31 LU LU47265D patent/LU47265A1/xx unknown
-
1965
- 1965-04-02 BE BE662026D patent/BE662026A/xx not_active IP Right Cessation
- 1965-04-23 US US45038665 patent/US3356490A/en not_active Expired - Lifetime
- 1965-04-28 DE DE19651458830 patent/DE1458830A1/de active Pending
- 1965-04-30 GB GB1822765A patent/GB1097811A/en not_active Expired
- 1965-05-04 NL NL6505692A patent/NL6505692A/xx unknown
- 1965-05-04 JP JP2604265A patent/JPS537370B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| LU46145A1 (enrdf_load_stackoverflow) | 1965-11-23 |
| LU46019A1 (enrdf_load_stackoverflow) | 1965-11-04 |
| GB1097811A (en) | 1968-01-03 |
| NL6505692A (enrdf_load_stackoverflow) | 1965-11-05 |
| LU47219A1 (enrdf_load_stackoverflow) | 1966-04-27 |
| LU46202A1 (enrdf_load_stackoverflow) | 1965-12-01 |
| LU46473A1 (enrdf_load_stackoverflow) | 1972-01-01 |
| JPS537370B1 (enrdf_load_stackoverflow) | 1978-03-17 |
| LU46229A1 (enrdf_load_stackoverflow) | 1965-12-02 |
| LU46119A1 (enrdf_load_stackoverflow) | 1965-11-21 |
| BE662026A (enrdf_load_stackoverflow) | 1965-10-04 |
| LU46249A1 (enrdf_load_stackoverflow) | 1964-12-03 |
| US3356490A (en) | 1967-12-05 |
| LU47265A1 (enrdf_load_stackoverflow) | 1966-05-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SH | Request for examination between 03.10.1968 and 22.04.1971 |